Reamer.



s. M; STEVENS.

REAMER. APPLICATION FILED 815F129, 1909.

Patented Jan. 10, 1911.

llVl/ENTUR WITNESSES TIT %TA% AT PALM REAMER.

Application filed September 9, 1909.

To all whom it may concern:

Be it known that I, SAMUEL 1W1. STEVENS, a citizen of the United States,and a resident of Asheville, in the county of Buncombe and State ofNorth Carolina, have invented a new and Improved Reamer, of which thefollowing is a full, clear, and exact description.

My invention relates to reamers, more particularly to that type ofreamer attached to die stocks, and the like, and adapted to roam pipewhile the die stock is being removed from the pipe.

My invention comprchends a self-feeding reamer slidably secured to aframe mounted on a die stock or the like, and adapted to ream a pipeafter the pipe has been threaded by the die and the die is being removedfrom the pipe.

My invention further comprehends certain novel features, as will behereinafter more fully described.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference denotecorresponding parts in all the views, and in which- Figure 1 is a sideelevation showing my device attached to a die-stock having therein apipe, parts being shown in section; Fig. 2 is a side elevation similarto Fig. 1 but show ing my device as applied, parts being in section; andFig. 3 is a sectional view taken on the line 38 in Fig. 1, looking inthe direction indicated by the arrows.

A die-stock 10 having therein a die 11, for threading a pipe 12, hasattached thereto a reamer 13 by means of suitable bolts 14. The reamer13 comprises a double slotted frame 15 consisting of uprights 16 and 17having therein slots 18 and 19, and a crosspiece 20 disposed on theuprights 16 and 17, the said uprights having lugs 21 and integral withthe frame 15 and holding the same on the die-stock 10 by means of thebolts 14.

Centrally located in the cross-piece 20 is a hole 23 for slidablyreceiving a leftthreaded screw rod 24: secured to a handle 25 by meansof a set screw 26. Disposed between the uprights 16 and 17 and providedwith lugs 26 and 27, adapted to slide in the slots 18 and 19, is aconical-shaped reamer 28 having therein a screw-threaded hole 29 forreceiving the screw rod 2 1, the

Specification of Letters Patent.

Patented J an. 10, 1911.

Serial No. 516,844.

said screw threads on the screw rod 2 1 being of a coarse nature and ofone-half the number of threads as there are threads on the pipe 12.

The operation of my device is as follows: hen the required number ofthreads have been cut on the pipe 12, by the die 11 in the die-stock 10,the motion of the die-stock 10 is reversed so as to disengage the samefrom the pipe 12. At the same moment, the handle 25 is turned so as toforce the reamer 28 into engagement with the pipe 12, and then byholding the handle 25 stationary, while the die-stock 10 is movingoutwardly and disengaging from the pipe 12, the reamer 28 is forcedinwardly on the pipe 12 by the left coarse threaded screw rod 24; and isturned by the frame 15 secured to the revolving die-stock 10 andslidably engaged by the reamer 28. This constitutes a selffeedingreamer, and when the pipe is sufliciently reamed, a few turns of thehandle 25 will disengage the reamer 28 from the pipe 12.

It will be understood that my reamer can be easily attached to variousdie-stocks of different sizes, and it will also be understood that I donot limit myself to the precise construction as shown in the drawings,the scope of my invention being defined in the appended claims.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. In combination, a die-stock having a die adapted to engage and threada pipe, a reamer mounted to turn with the die-stock and having an axialmovement relative to the die and pipe, and means between the the stockand the reamer whereby the unscrew ing of the die from the pipe willmove the reamer in an opposite direction into reaming engagement withthe pipe.

2. In combination, a die-stock having a die adapted to engage and threada pipe, a reamer mounted to turn with the die-stock and having an axialmovement relative to the die and pipe and an operating connectionbetween the die stock and the reamer whereby the unscrewing of the diefrom the pipe will move the reamer in an opposite direction and intoreaming engagement with the pipe.

3. In combination, a die-stock having a die adapted to engage and threada pipe, a

reamer mounted to turn with the die-stock, and a screw engaging themanner, with the threads on the screw of opposite pitch to the threadson the pipe, to move the die and the rearner toward each other to engagethe reamer with the pipe and ream the same on unscrewing the die fromthe pipe.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

SAMUEL M. STEVENS.

WVitnesses:

J. D. PENLAND, E. J. RANDOLPH.

